What it delivers
The ThermoMate ET110HCUS 11 kW Electric Tankless Water Heater is a compact electric tankless rated at 11 kW on 240 volts.
Worked out from its input, it delivers roughly 1.7 GPM when the water only has to rise 45°F, and 1.1 GPM at a 70°F winter rise: less than one 2 GPM shower in summer, less than one 2 GPM shower in winter. Try your own inlet temperature.
At 240 volts 11 kW is about 46 amps (the listing states 46 A). The maker calls for Double Pole 50Amp breaker. A licensed electrician confirms the panel, the service and the wire before it goes in.
No flue, no gas line and a compact box on the wall; the trade-off is that a cold winter inlet cuts its flow sharply.
Other listed details: connections: 1/2” npt; material: Alloy Steel; model: ET110HCUS.
The listing gives dimensions of 9.72 in (W) x 13.78 in (H) and a weight of 11 lb.
Right unit for this house?
Install it when
- Light use in mild climates
- Homes with no gas service
Look at another unit when
- Panels without spare capacity
- More than 1 shower at once in cold winters
Strengths and trade-offs
Strengths
- 11 kW
- No venting or gas line
- Breakers stated by the maker
Trade-offs
- Weak at a large winter rise
Install limits
- Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.
Rated performance
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | ET110HCUS | Retailer |
|---|---|---|
| Dimensions (seller) | 9.72"W x 13.78"H | Retailer |
| Features (seller) | Instant heating, Leaking free and maintenance free heating element, Side water connections | Retailer |
| Power | 11 kW | Retailer |
| Voltage | 240 V | Retailer |
| Product weight | 11 lb | Retailer |
| Material | Alloy Steel | Retailer |
| Amps (maker) | 46 A | Retailer |
| Breakers (maker) | Double Pole 50Amp breaker | Retailer |
| Connections | 1/2” npt | Retailer |
Rival units at this flow
More electric tankless water heaters rated for similar demand
- Eemax EEM24013 13 kW Electric Tankless Water Heater
- EcoSmart ECO 11 13 kW Electric Tankless Water Heater
- VancEpic RE13K 13 kW Electric Tankless Water Heater
- SIVUATEK TSB-140 Air 14 kW Electric Tankless Water Heater
Full electric tankless water heaters spec grid · Every ThermoMate unit in the catalog
Final verdict
A sensible compact electric tankless for light use in mild climates.
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